将byte []转换为String并返回c# [英] Converting byte[] to String and back c#

问题描述

我正在尝试使用Encoding.Unicode将byte []转换为字符串并返回.有时Encoding.Unicode能够将byte []转换为字符串，有时输出是！=输入.我在做什么错了?

I’m trying to convert a byte[] to a string and back using Encoding.Unicode. Sometimes Encoding.Unicode is able to convert the byte[] to a string and sometimes the output is != the input. What am I doing wrong?

感谢您的帮助.

public static void Main(string[] args)
{
    Random rnd = new Random();
    while(true)
    {
        Int32 random = rnd.Next(10, 20);
        Byte[] inBytes = new Byte[random];
        for(int i = 0; i < random; i++)
            inBytes[i] = (Byte)rnd.Next(0, 9);

        String inBytesString = Encoding.Unicode.GetString(inBytes, 0, inBytes.Length);
        Byte[] outBytes = Encoding.Unicode.GetBytes(inBytesString);

        if(inBytes.Length != outBytes.Length)
            throw new Exception("?");
        else
        {
            for(int i = 0; i < inBytes.Length; i++)
            {
                if(inBytes[i] != outBytes[i])
                    throw new Exception("?");
            }
        }
        Console.WriteLine("OK");
    }
}

推荐答案

您不能为此使用编码:您必须使用类似Convert.ToBase64String/Convert.FromBase64String之类的东西.

You cannot use Encoding for that: you must use something like Convert.ToBase64String / Convert.FromBase64String.

编码假定byte []是根据特定规则进行格式化的，而随机非字符串byte []则不是这种情况.

Encoding assumes the byte[] is formatted according to specific rules, which are not the case for a random non-string byte[].

总结一下:

编码将任意字符串转换为格式化字节[/]或从格式化字节[]

An Encoding turns an arbitrary string to/from a formatted byte[]

Base-64将任意字节[]转换为格式化字符串，或从格式化字符串转换为

Base-64 turns an arbitrary byte[] to/from a formatted string

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